You are working from the bottom up, so yes, it will tilt because the front is shorter than the back. As you put in the tops hoops, it will start to even out, as this is where most of the extra length is used up. Even then, part of the balancing is the tie strings resting against your backside, forming a sort-of bustle. SO just keep going, Gut the all the hoops attached. And then you can do any minor adjustments to even out the tape placements, so they look vertical, rather than zig-zaggy.